What is the name of this printer part:


and is it user serviceable? The printer in question is a HP Color LaserJet 2605dn.
FYI: The rip started really small, but I needed to print stuff for school and it expanded, it didn't get that big through sheer stupidity.
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EDIT:
Looks like $170 + S&H to fix, but the comparable printer (HP Color LaserJet CP2025dn) is $550 so it's a tough call. :-/